![]() Currently, only small studies have been performed to investigate the coil mechanism of action. 2 Mechanistically, endobronchial coils are presumed to be different from either traditional LVRS or endobronchial valves, although further investigation is needed to fully elucidate the mechanism of action of coils. 1 However, bronchoscopic lung volume reduction using shape‐memory nitinol endobronchial coils is a non‐blocking technology, in that it allows ventilation of the treated lobe. Current lung volume reduction techniques such as lung volume reduction surgery (LVRS) and endobronchial valves typically remove or collapse the most diseased regions to reduce hyperinflation. In patients with severe emphysema, severe lung hyperinflation impairs breathing mechanics, drastically diminishing quality of life and exercise tolerance.
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